1 Department of Physics, Chemistry and Pharmacy, Faculty of Science, SDU2 SDU eScience Centre, Department of Mathematics and Computer Science (IMADA), Faculty of Science, SDU3 unknown4 SDU eScience Centre, Department of Mathematics and Computer Science (IMADA), Faculty of Science, SDU
Migrating birds fly thousand miles without having a map, or a GPS unit. But they may carry their own sensitive navigational tool, which allows them "see" the Earth’s magnetic field. Here we review the important physical and chemical constraints on a possible compass sensor and discuss the suggestion that radical pairs in a photoreceptor cryptochrome might provide a biological realization for a magnetic compass. Finally, we review the current evidence supporting a role for radical pair reactions in the magnetic compass of birds.
Exciting Interdisciplinary Physics: Quarks and Gluons / Atomic Nuclei / Relativity and Cosmology / Biological Systems, 2013, p. 481-492